<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>hde_user</title>
</head>
<body>
<p th:text="'Hello, student is ' + ${student} + '!'" />
<p th:text="'Hello, studentMap is ' + ${studentMap} + '!'" />
<p th:text="'Hello, studentByOptionalKeys is ' + ${studentByOptionalKeys} + '!'" />
<p th:text="'Hello, add addResult is ' + ${addResult} + '!'" />
</body>
</html>